Zope Component getUtility call from Jinja2 template (whoa!)

example.py

# Zope Component Utilities are perfect for injecting up-to-date state/config from far away regions of your app
# To do so just don't __call__() the utility when you register it - register it as a method only but call it from your template
# Make sure to pass in your interface and utility function (zope.component.getUtility) to jinja - then profit!

'mytld.com':{
    'config':{
        'tld':'mytld.com',
        'iface':IFWUtils,
        'utilfunc':getUtility
    }
}

###

{% with
  tld=config.get('tld'),
  IFWUtils=config.get('iface'),
  getUtility=config.get('utilfunc') %}
  {% for url in getUtility(IFWUtils, 'get_scripts_by_host')(tld) %}
    <script src="{{ url }}" type="text/javascript"></script>
  {% endfor %}
{% endwith %}